The Resistance of Various Non-Metallic Materials to Perforation by Steel Fragments; Empirical Relationships for Fragment Residual Velocity and Residual Weight
Abstract
Perforation data for steel fragments impacting on each of seven non- metallic materials were col lected and analyzed. The experimental data are characterized by compact fragments weighing five to 825 grains, striking velocities as high as 12,000 feet per second, and obliquities of strike as high as 70 degrees. Empirical formulas of a given type were fitted to the data for each tar get material, thereby relating fragment residual velocity and residual weight, in separate equa tions, to important impact parameters. The two sets of formulas, used jointly, serve as a basis for several extensions or applications such as (1) a comparison, for equal weight of target per unit area, of the resistance of target materials to perforation, (2) a calibration of the resist ance of a target material to perforation in terms of the maximum thickness of a standard medium that the residual fragment can perforate, and (3) a determination of the effect of an intermediate barrier on the potential of a fragment to damage a primary target beyond the barrier. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1963
- Accession Number
- AD0336461
Entities
Organizations
- Johns Hopkins University